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3 years ago

Tìm x a) 4x^2-12x=-9

Mathematics

1 answer:

DaniilM [7]3 years ago

5 0

Just told you : first know by heart remarkable identities !

Then apply :

4x²-12x = -9

4x²-12x +9 =0

(2x-3)² = 0

(2x-3) (2x-3) = 0

Now you have a double solution :

2x-3 = 0

and 2x -3 = 0

I let you try !

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3 years ago

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3 years ago

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